New to reloading and I made an observation. I have everything I need now except the FMJ 9mm bullets and they are on their way. I do have some <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-comffice:smarttags" /><st1:State w:st="on"><st1lace w:st="on">Berry</st1lace></st1:State> plated rounds that I am using to set the dies and get the process down while I wait for the FMJ to be delivered. People have said they have had some problems with keyholing with Glocks while others say they work fine for them (This post isnt really about that though). I figured I would start out reloading without the unknown factor added in. I made four or so dummy rounds to get the dies set I used the calipers to match the OAL to the UMC 9mm store bought (Dunhams) so I know the length will work in my Glock 26 and Beretta 92FS Compact. In fact they all chamber and eject from both guns. When I looked closely at the cases I noticed that the cases were wider at the ends than in the middle. Here are the caliper measurements from a dummy round: <?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o> </o> Dummy Round Widest near the head = .386 Narrowest part of body = .374 (1/3 from the mouth of brass) Nearest to end of brass = .377 <o> </o> UMC 9mm Store bought Widest near head = .385 Measured where dummy round was narrowest = .378 Nearest to end of brass = .375 <o> </o> I know that the <st1:State w:st="on"><st1lace w:st="on">Berry</st1lace></st1:State>s plated rounds state that the wide of the 115 gr RN is .356. The Lyman 49<SUP>th</SUP> Ed says that the width should be .355. Is this enough difference to cause trouble and is the case narrowing a problem? Thanks.